Green Dot training atendees throw pieces of paper to one another during a class at Keesler Air Force Base, Miss. Nov. 5. that explain the different barriers bystanders may have to intervening in a negative situation. Green Dot is the U.S. Air Force's program to help raise awareness of and prevent sexual assault, domestic violence and stalking. (U.S. Air Force photo/Staff Sgt. Heather Heiney)